Rotary motor.



o; 867,260. PATENTED 0011,1907.

P. ELLIS. ROTARY-MOTOR.

APPLIOATION I'ILBD MAY 7. 1906.

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Adar-nays- EATEN'I'ED OCT. 1, 1907.

No. 867,260; I

P. ELLIS, I

ROTARY MOTOR APPLICATION FILED MAY 7. 1906.

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PETER ELLIS, OF KILBIRNIE, WELLINGTON, NEW ZEALAND.

ROTARY MOTOR.

Specification of Letters Patent.

Patented Oct. 1, 1907.

Application filed May '7, 1906. Serial No. 315,662.

To all whom it may concern:

Be it known that 1, PETER ELLIS, a subject of His Majesty the King of Great Britain and Ireland, residing at Kilbirnie, Wellington, in the Provincial District of Wellington, in the Colony of New Zealand, have invented certain new and useful Improvements in R0- tary Motors, of which the following is a specification.

This invention provides a motor of simple construction operated by steam, compressed air, or other fluid pressure.

The invention comprises a drum 01' boss around which cylinders and steam ports are arranged radially. Pistons fit the cylinders which are open at their outer ends so that the pistons may project therefrom. Thedrum is mounted upon a hollow axle having steam and exhaust ports separated by a partition, the said portscommunicating respectively with the end or ends of the hollow axle. A casing having an internal diameter greater than the drum surrounds the said drum. The outer periphery of the casing is shaped to suit the class of work to which the motor is to be applied, thus the said periphery may be shaped as a pulley to receive a belt, and may be lagged with wood or other non-conductor of heat, or it may be flanged to run upon a rail, or adapted for driving by frictional contact. The motor is started by turning the hollow axle through part of a circle, when the pistons, receiving steam, press against the interior periphery of the casing. The drum and casing revolve owing to the eccentricity of one to the other. The steam is further employed for revolving the motor by acting between the drum and casing and upon one side of a piston projecting from the drum. The motor is reversed and runs in an opposite direction when the hollow axle is turned to admit steam to the cylinders on the opposite side of the other side of the boss. The steam may be led from the exhaust port to a steam port further along the hollow axle, and thence to a second motor, and so on to other motors until the expansion of the steam is exhausted.

The drawings illustrate the invention,Figure 1. is a side elevation, and Fig. 2. an end elevation, and Fig. 3. is a longitudinal section on line A. A. Fig. 2, and Fig. 4. is a sectional elevation on line B. B. Fig. l of the motor, and Fig. 5. is a perspective view of a roller, and Fig. 6. is a longitudinal section of a hollow shaft, and Fig. 7. is an end elevation of a bearing, and Fig. 8. is an elevation showing the reversed end of the bearing, and Fig. 9. is a section through the hollow axle on the line C. C. Fig. 6, and part of the drum, and Fig. 10. is a side elevation of a piston, and Fig. 11. is a section of the piston on line D. D. Fig. 10, and Fig. 12. is a section of the boss showing a modified form of piston, and Fig. 13. is a perspective view of a roller piston, and Fig. 14. is a longitudinal section of a modified form of hollow shaft, and Fig. 15. is an end view of the said shaft and its bearing, and Fig. 16. is a section of the shaft on line E. E. Fig. 14.

Referring more particularly to Figs. 1 to 11, inclusive, the drum 1 has cylinders 2 throughout its length, and steam ports 3 forming communications between the said cylinders, and a hole 4 in the center of the drum.

Rectangular pistons 5 fit a cylinder, and have their outer ends rounded, as clearly shown in Fig. 4. The pistons are made steam tight within the cylinders by packing strips 6 and 7 which fit into grooves 8 and 9 provided in the piston. Spiral springs 10 fit into holes through the piston, and press the packing strips against the sides of the cylinders.

The drum is mounted upon a hollow axle 11 provided with a steam port 12, and an exhaust port 13, separated from each other by a partition 14, so that live steam entering the end 15 of the axle 11, passes through the port 12, and exhaust steam entering the port 13 passes out at the end 16 of the said axle.

A casing 17 having an internal diameter greater than the drum 1, surrounds the said drum, and has its outer periphery 18 shaped to receive a belt, and lagged with wood, or other non-conductor of heat. The casing revolves upon rollers 19 and 20, which bear upon bearings 21 and 22, whereby the center of the said casing is eccentric to the axis of the hollow axle 11. The bearings 21 and 22 have squared bosses 23 and 24 fitting into squared recesses, formed in pillars 25 and 26 of a base plate 27. Caps 28 and 29 retain the bosses 25 and 24 within their recesses. Flanges 30 and 31 formed upon the inner ends of the bearings 21 and 22 fit into recesses formed upon the inner sides of the drum, and coil springs 32 and 33 in compression between the pillars 25 and 26, and nuts 34 and 35 screwed upon the outer ends of the bearings 21 and 22, keep the flanges 30 and 31 within their recesses. The nuts 34 and 35 are provided with packs 36 and 37 for making a steam tight joint around the hollow axle 11. By making the bosses 23 square the bearings 21 and 22 may be turned to alter the eccentricity of the drum and the casing, so that a belt running upon the drum will operate to the best advantage for the motor.

With the steam port of the hollow axle 11, in the position shown in Fig. 4, the cylinders passing over the said port in the direction shown by the arrow, receives steam which forces the pistons 5 against the inner periphery of the casing and thus revolve the drum and casing together. The above action of the pistons, however, is supplemented by admitting steam to the ports 38, 39 and 40, as clearly shown in Fig. 4; steam being admitted to the space 41 between the drum and the casing, and acting between the drum and the casing assist the piston exposed to the steam in tending to separate the drum from the casing and thus cause the motor to revolve.

Referring to the Fig. 12, the pistons l2 consist of rollers, as clearly shown in Fig. 13, to reduce any iriction which may arise between the drum and the casing.

Referring now to Fig. 14, a hollow tube is shown with the partition 14, extending throughout the length oi the hollow axle, which is thus divided into two parts, so that the exhaust steam is delivered near the steam receiving end of the axle. The end 43 oi the shalt may thus be extended to positions where it would be inconvenient to exhaust the steam, as l'or example, at the end of a propeller shaft. in this case the steam is admitted to a boss 44 having a tapered hole in which the tapered end 45 of the hollow axle [its accurately. A disk 46 fitting accurately against the end ol' the tube is prevented from turning by a pin 17 passing through the disk and entering the boss. A port 48 provided in the said disk admits steam above the partition i l, when the axle is rocked by the operating handle 49.

The motor is reversed by operating the handle 49 to right or leit as shown in Fig. 2, thereby throwing the steam port 12 to one side or other oi the vertical. Steam admitted to the cylinders 2 is allowed to expand until the ports 3 communicate with the port 13 when the steam passes out at the end 16 of the hollow axle.

What I do claim and desire to secure by Letters Patent of the United States is l. A motor comprising in combination, a base plate, pillars integral with the base plate, bearings having squared bosses fitting recesses formed in the pillars, caps upon the pillars retaining the hearings in the recesses a casing mounted upon the bearings, flanges upon the bearings fitting recesses in the casings, friction rollers between the casing and the bearings, screwed caps fitting the screwed ends of the bearings, coil springs in compression between the said caps and the pillars, packing within the caps, a hollow axle passing through the bearings, a drum revolnbly mounted on the axle [here beinga series of radial cylinders and radial ports in the drum, pistons fitting the cylinders. a partition in the axle separating an inlet port from an exhaust port provided in the axle. each cylinder having a port which cylinder ports and the radial ports give communication to the inlet and exhaust of the axle alternately. substantially as set forth.

2. A motor comprising in combination. a. base plate. pillars inte ral with the base plate. a drum having a series of cylinde and radial ports. pistons lilting the cylinders. a casing 01' large diameter receiving said drum, an axle hollow throughout part of its lcnuih and supported by said pillars upon which the drum is rcvoluhly mounted. hearings in the pillars aml in which the axle is mounted. a partition throughout the length of the hollow part of the axle and separating the inlet port from the exhaust port of the axle there being openings at the same end ol the axle to the two sides of lhe parlilion. each cylinder having a port which cylinder ports and the radial ports give communication to the inlet and exhaust ports of the axle alternately a boss having a tapered hole lilting the tapered end of the axle. a perforated plate lilting .iins1 the end of the axle, a pin to prevent lhc plate from revolving. and an operating handle for revolving the axle. substantially as set forth.

3. A motor comprising in combination a base plate. pillars integral with the base plate. a drum having a series of radial cylinders, roller shaped pistons lilting ihe cylinders, a casing larger in diameter receiving said drum. a hollow axle upon which the drum is revolnhly mounted. said axle having inlet and exhaust ports. a partition in the axle separating the inlet port from the exhaust port. each cylinder having a. port giving communication to the inlet and exhaust ports oithe axle alternately. substantially as set forth.

In testimony whereof I have signed my name to (his specification in the presence of two witnesses.

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